Dmytro Hladyshev
Technical Transactions, Architecture Issue 8 A (15) 2014, 2014, pp. 59-69
https://doi.org/10.4467/2353737XCT.14.191.3279General data according to the conducted examination of some monolithic and precast steel concrete constructions of tower type, which were built by authors in Ukraine in the period from 2006 to 2011, has been described in this article. Conducted research has shown that unqualified implementation of separate works and factory defects in constructional elements are the basic reason of ruining the buildings and constructions. The materials of the analysis of the consequences from ruining buildings and constructions, and their elements from the defects during implementing building – assembly works, defects from technologic and random impacts are important in the way that from this analysis certain thoughts concerning making basic actions, which are directed on dissolution of different kind of defects to provide reliable operation of buildings and constructions, can be done.
Dmytro Hladyshev
Technical Transactions, Volume 12 Year 2017 (114), 2017, pp. 113-122
https://doi.org/10.4467/2353737XCT.17.213.7756In the work, different approaches to projecting concrete elements have been considered, taking into account concrete deformation under tension in a casing around the crushing area at different levels of loading. The purpose of the investigations was the detection of the principal factors, which discern the taken empirical approaches to the computing models from the experimental character of tension strain distribution and concrete deterioration around the loading area. There have been determined, through an experiment, the lateral strains of the concrete tension along the perimeter of the side cube faces with the size of cube edges that equal to 300 mm with the formation of the cracks and up to the deterioration. The approach to calculations of the effect made by the samples of the above-mentioned type on local vertical loading with the reducing coefficient of their working conditions should be considered in the regulatory documents.